Color-changing mood rings, forehead fever strips and car-shade indicators all change hues as they warm and cool, thanks to a ...

Color gradient filament is fun stuff to play with. It lets you make 3D prints that slowly fade from one color to another along the Z-axis. [David Gozzard] wanted to do some printing with this effect, ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Dorie Chevlen Dorie Chevlen is a writer covering home design. Her subjects ...